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developer/vendor/symfony/console/Command/ListCommand.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Console\Command;
+
+use Symfony\Component\Console\Helper\DescriptorHelper;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Input\InputDefinition;
+
+/**
+ * ListCommand displays the list of all available commands for the application.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class ListCommand extends Command
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('list')
+            ->setDefinition($this->createDefinition())
+            ->setDescription('Lists commands')
+            ->setHelp(<<<'EOF'
+The <info>%command.name%</info> command lists all commands:
+
+  <info>php %command.full_name%</info>
+
+You can also display the commands for a specific namespace:
+
+  <info>php %command.full_name% test</info>
+
+You can also output the information in other formats by using the <comment>--format</comment> option:
+
+  <info>php %command.full_name% --format=xml</info>
+
+It's also possible to get raw list of commands (useful for embedding command runner):
+
+  <info>php %command.full_name% --raw</info>
+EOF
+            )
+        ;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getNativeDefinition()
+    {
+        return $this->createDefinition();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        if ($input->getOption('xml')) {
+            @trigger_error('The --xml option was deprecated in version 2.7 and will be removed in version 3.0. Use the --format option instead.', E_USER_DEPRECATED);
+
+            $input->setOption('format', 'xml');
+        }
+
+        $helper = new DescriptorHelper();
+        $helper->describe($output, $this->getApplication(), array(
+            'format' => $input->getOption('format'),
+            'raw_text' => $input->getOption('raw'),
+            'namespace' => $input->getArgument('namespace'),
+        ));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    private function createDefinition()
+    {
+        return new InputDefinition(array(
+            new InputArgument('namespace', InputArgument::OPTIONAL, 'The namespace name'),
+            new InputOption('xml', null, InputOption::VALUE_NONE, 'To output list as XML'),
+            new InputOption('raw', null, InputOption::VALUE_NONE, 'To output raw command list'),
+            new InputOption('format', null, InputOption::VALUE_REQUIRED, 'The output format (txt, xml, json, or md)', 'txt'),
+        ));
+    }
+}